The SKF bearing surface, the appearance of SKF directly determines his authenticity. To determine if it meets the standards we require. The original SKF inspection should be carried out under the astigmatism lamp, and carefully observe the bearing's appearance, cracked bearing marks and other parts. Let's share with you the parts we should check.
Various mechanical scars, scratches, crushing, bumping, etc., causing eccentric load and stress concentration, can cause poor installation, such as abrasion, resulting in a decrease in rotation accuracy and service life.
It is peeled and folded, and there are often different types of decarburization or carbon depletion around it. The material is easy to collapse. The concave or the wear, the two defects are not firmly combined with the base metal, which is unfavorable for the life and accuracy.
Various cracks will become a source of stress concentration and rapidly expand, such as raw material cracks, which will cause bearing cracking, forging cracks, heat treatment cracks and grinding cracks in the subsequent operation, which have a great influence on bearing life and work safety. Big. In fact, for important applications, the bearing factory has performed 100% magnetic or radiographic inspection of its components.
Therefore, the real SKF bearings can also be seen in the appearance, the above is just to help those who are planning to buy SKF bearings.
The riveting or welding quality of the cage, whether the welding position is correct, the welding point is too large or too small, mainly to observe whether the rivet head is biased. Skewed. Relaxed, lack of meat or "double eyelids", whether the welding is not strong or excessive welding Causes the phenomenon of stuck rolling elements. The above items are the parts that we check in the original SKF. In addition, if the typing quality is not good, the defective products should be considered as defective, such as illegible writing. Damage, except for the above-mentioned inspection, serious It is also not acceptable.
Corrosion. Black skin and pitting, the latter two are defects that easily store moisture and dirt, and are most likely to develop into rust. Corrosion is a result of poor installation. The source of early wear and fatigue is full of roller bearings, and severe rust can be scrapped.